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Miniature Circuit Breakers
  • CHINT Double Pole 125A MCB Main Switch DP 125A CHINT MCB Circuit Breaker NXB 2P 100A MCB 10kA CHINT Miniature Circuit Breaker
  • CHINT Double Pole 125A MCB Main Switch DP 125A CHINT MCB Circuit Breaker NXB 2P 100A MCB 10kA CHINT Miniature Circuit Breaker
  • CHINT Double Pole 125A MCB Main Switch DP 125A CHINT MCB Circuit Breaker NXB 2P 100A MCB 10kA CHINT Miniature Circuit Breaker
  • CHINT Double Pole 125A MCB Main Switch DP 125A CHINT MCB Circuit Breaker NXB 2P 100A MCB 10kA CHINT Miniature Circuit Breaker
  • CHINT Double Pole 125A MCB Main Switch DP 125A CHINT MCB Circuit Breaker NXB 2P 100A MCB 10kA CHINT Miniature Circuit Breaker
  • CHINT Double Pole 125A MCB Main Switch DP 125A CHINT MCB Circuit Breaker NXB 2P 100A MCB 10kA CHINT Miniature Circuit Breaker
CHINT Double Pole 125A MCB Main Switch DP 125A CHINT MCB Circuit Breaker NXB 2P 100A MCB 10kA CHINT Miniature Circuit Breaker

CHINT Double Pole 125A MCB Main Switch DP 125A CHINT MCB Circuit Breaker NXB 2P 100A MCB 10kA CHINT Miniature Circuit Breaker

  • 12 - 179 Pieces
    $4.99
  • 180 - 899 Pieces
    $4.49
  • 900 - 1799 Pieces
    $3.99
  • >= 1800 Pieces
    $3.49

Customization:

Customized logo（Min.Order: 2000 pieces）
Customized packaging（Min.Order: 3000 pieces）
Graphic customization（Min.Order: 2000 pieces）
View product details

CHINT Double Pole 125A MCB Main Switch DP 125A CHINT MCB Circuit Breaker NXB 2P 100A MCB 10kA CHINT Miniature Circuit Breaker

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • Overcurrent Protection: Safeguards electrical systems against overloads up to 100A, preventing damage and fire risks.
  • Short-Circuit Protection: Handles extreme short-circuit currents of 10kA (Icu) and 7.5kA (Ics), ensuring system integrity under severe fault conditions.

Key features

  • 1. Material Technology

    • With a composite plastic and metal body, you can achieve a 20% lighter design* while maintaining robust insulation and durability compared to all-metal circuit breakers. The plastic casing enhances safety by reducing weight and improving electrical isolation.

  • 2. Interactive Design

    • With a modern, color-coded design featuring blue and white accents, you can quickly identify and operate the switch in crowded electrical panels*, ensuring easy installation and maintenance in complex systems.

  • 3. Performance Parameters

    • With a 10kA short-circuit withstand rating and 4kV insulation level, you can handle severe overcurrent events and high-voltage surges*, outperforming standard 6kA models* and providing superior protection for critical systems.

  • 4. Scenario Solutions

    • With robust overcurrent and short-circuit protection, you can ensure uninterrupted operation in industrial and commercial settings*, even during frequent power surges or demanding electrical loads.

  • 5. Certification Standards

    • With IEC 60947-2 and GB/T 14048.2 certifications, you can meet international safety and performance requirements for commercial installations*, ensuring compliance with global standards.

Product details

CHINT Double Pole 125A MCB Main Switch DP 125A CHINT MCB Circuit Breaker NXB 2P 100A MCB 10kA CHINT Miniature Circuit Breaker

The CHINT NXB-125 100A Miniature Circuit Breaker (MCB) is a robust, compact solution for industrial and commercial electrical systems. With a 10kA breaking capacity, 400V rated voltage, and 2 poles, it ensures reliable overcurrent and short-circuit protection while maintaining safety through its 4kV insulation level. Its lightweight plastic-and-metal construction and modern design enable easy installation in diverse environments.

Technical specifications

FeatureSpecificationBenefit
Breaking Capacity10kA Icu / 7.5kA IcsHandles severe short circuits without failure
Rated Current100A / 125ASupports high-demand electrical loads
Rated Voltage400V~ 50Hz / 60HzCompatible with global power standards
Insulation Level4kV (Uimp)Prevents electrical shocks and arcing
MaterialDurable plastic + metal alloyLightweight yet rugged construction
CertificationsIEC 60947-2, GB/T 14048.2Meets international safety and quality norms
Protection TypesLSIG, LSI, LI, and otherCustomizable tripping curves for precise fault detection

Customization guide

Adjustable rated current (100A/125A) and pole configurations (2P) to meet specific load requirements. Customize tripping curves (e.g., C-curve) for precise overcurrent protection in industrial machinery or commercial lighting systems.

Get inspired

With its compact design and high breaking capacity, the CHINT NXB-125 is ideal for safeguarding electrical systems in factories, data centers, or commercial buildings. Its 20% lighter weight compared to traditional metal enclosures simplifies retrofitting in tight spaces.

Choose your model

ParameterBase Model (NXB-125 100A)Advanced Model (NXB-125 125A)Pro Model (NXB-125 Pro)
Rated Current100A125A160A*
Breaking Capacity10kA10kA12kA*
Insulation Level4kV4kV6kV*
Frequency Compatibility50/60Hz50/60Hz50/60Hz + harmonic filtering

Supplier's note

  1. Key Technical Breakthroughs:

    • 10kA Breaking Capacity: Outperforms industry benchmarks (typically 6kA–8kA) for industrial-grade fault protection.
    • 4kV Insulation: Exceeds IEC 60947-2 requirements, enabling safe operation in high-voltage environments.
    • Dual-Frequency Support: Operates seamlessly on 50Hz/60Hz grids without recalibration.

  2. Version Selection Guide:

    • Base Model: Ideal for standard commercial applications (e.g., office lighting, HVAC systems) where 100A load capacity suffices.
    • Advanced Model: Targets industrial machinery or high-power commercial setups requiring 125A handling.
    • Pro Model: Best for critical infrastructure (e.g., data centers, mining equipment) needing 20% higher breaking capacity and 50% improved insulation for extreme conditions.

With the Pro Model’s 12kA breaking capacity, you can safely manage severe short circuits in harsh environments. Its 6kV insulation pairs with harmonic filtering to protect sensitive electronics, ensuring uninterrupted system reliability.

Frequently asked questions

  • Which CHINT MCB model is best for commercial buildings with high current demands?

  • Is the CHINT NXB-125 100A IEC 60947-2 certified for industrial safety standards?

  • How does the plastic-and-metal design of CHINT MCBs compare to all-metal breakers?

  • Can I customize the CHINT NXB-125 to handle 125A instead of 100A?

  • What electrical protections does the CHINT NXB-125 100A provide?

  • How often should I inspect the CHINT NXB-125 circuit breaker?

  • Can the CHINT NXB-125 handle 10kA short-circuit currents without damage?

  • Is the CHINT NXB-125 suitable for 60Hz power systems?

Product comparison

CategoryUsage ScenariosCharacteristicsAdvantagesDisadvantages
Breaking CapacityIndustrial/commercial systems with high fault currents10kA (Base ▲▲▲) vs Industry Standard 6kA (IEC 60947-2 compliant)Safely interrupts severe short circuits (up to 10kA), protects system integrityHigher cost than lower-rated breakers; requires robust installation infrastructure
Rated CurrentHigh-load circuits in factories or commercial buildings100A–125A (Base ▲▲) vs Industry Standard 63A (IEC 60947-2)Supports heavy-duty applications without tripping; adaptable to 125A Advanced ▲Not ideal for low-current residential use; may overcomplicate simple setups
Insulation LevelEnvironments with voltage spikes (e.g., industrial machinery)4kV (Base ▲▲▲) vs Industry Standard 2.5kV (IEC 60947-2)Prevents electrical shocks and arc faults; maintains safety under voltage surgesRequires proper grounding to avoid misuse; adds weight compared to basic models
Protection TypesSystems needing multi-level fault detection (e.g., data centers)LSIG, LSI, LI (Base ▲▲) vs Industry Standard basic overcurrent protectionDetects ground faults (LSIG), short circuits (LSI), and overload (LI)Requires skilled technicians for configuration; may trigger false alarms in unstable grids
Design & MaterialCompact spaces or high-voltage areasDurable plastic/metal hybrid (Base ▲) vs Industry Standard plastic-onlyLightweight yet robust; ISO 9001-certified corrosion resistanceHigher material costs than basic plastic models; requires careful handling during installation
Customization OptionsTailored installations (e.g., specific industrial needs)Configurable poles/ratings (Base ▲▲) vs Industry Standard limited optionsAdapts to unique system requirements (e.g., pole count, current ratings)May incur additional costs for customization; longer lead times for non-standard orders

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